Locomotive structure



Dec. 26, I K s HOWARD LOCOMOTI VE STRUCTURE Filed March 16, 1932 4 Sheets-Sheet l A fan? 65 Dec. 26, 1933. K 5 WARD 1,940,715

LOCOMOTI VE STRUCTURE Filed March 6; 19:52 4 Sheets-Sheet 2 //71/e/7f0r A Mar/75y Patented Dec. 26, 1933 STRUCTURE Karl S. Howard, Philadelphia, Pa., assignor to General Steel Castings'Oorporation, Granite City, 111., a corporation-of Delaware Ap lication March ,932, Serial 110,5 9,

4ClaimS- (or. 122-462 I Thisinvention relatesto railway rolling stock ;:and consists particularly in a novel construction and n ement of a locomotive smokebox and isuperheater.

It hasbeen the usual practice in theconstruction of locomotive superheaters to utilize a single superheater header for both saturated and superheated steam, the header being located in the upper part of the smoke box and the superheater L header on each side of the smokebox to thevalve chambers. 4 u i Themain objects of the present invention are to simplify super heater construction and provide fora more direct flow of steam to the valve chambersthan isobtainedinprevious designs.

.Another object is to provide a superheater header structure which will serve as abuse for the smokebox wall. I

These objects and others-are attained substan- .tiallyby the provision of separate saturated steam and superheated steam headers located in the upper and lower portions of the smokebox, I

respectively, and extending across the same.

In the accompanying drawings which illustrate the invention- Figure 1 is a half front elevation of a smokebox embodying the invention and half vertical transverse section taken on line l1 of Figure 2.

Figure 2 is a side elevation of the structure in the smoke box with some parts sectioned for clearer illustration.

Figure 3 is a detail top view showing the upper or saturated steam header.

Figures 4 and 5 are detail vertical sections taken on the corresponding section lines of Figure 3.

Figure 6 is a detail top view showing the lower or superheated steam header.

Figures '7 and 8 are vertical sections taken on corresponding section lines of Figure 6.

Figure 9 is a view of a modified form of the invention, the right half being in elevation and the left half being taken on the line 9-9 of Figure 10.

Figure 10 is a vertical longitudinal section taken on the line 10-10 of Figure 9.

Figures 11 and 12 are detail vertical transverse sections taken on the corresponding section lines of Figure 10.

In Figures 1 to 8 is illustrated a locomotive boiler 1 mounting on the front end thereof the usual smokebox 2 including smokestack 3 and lift pipe .4, deflector 6 and screens 5, exhaust pipe I 7, and front flue sheet 9:to .which are-"attached the forward ends of superheater 1lues. 10. :flhe smokebox is supported on saddle llhaving interior exhaust passages 12 -;and:an inside f fve steam-passage -13 at one side thereof. The c'ylinders and valve chambers (not shown) maybe formed integral with the saddle. My copending application Serial No. -.533,325 filed April 2'7, 1931 illustrates a similarcylinder saddle structure whichalso includes a throttle valve housing A saturated steam headerl4 is mounted in n he upper part ofthe smqkebox uponbraclgets l5. and comprises a plurality of horizontally disposed chambers 16 and atrans'versepq sage 17 extend- J0 ing along the rear side of-the header and connected with the;- cham be r s v16.;- A central upward y d sp sp as slfi on ects w ti sheet ring 19 and dry pipe 2Q. a

: A separate superheated, steam header; 1 21, mounted in the lowerpartzof-the smolgebox on brackets 22, has a series of horizontally disposed chambers 23, corresponding --with--chambers 16in the upper header,- and-a passage 24 extending transversely. across the front side thereof and .80

connected. with;cham bers 23. .A- central-openin 25 in passage 24 connects with a second passage 26 having an outlet 2'? connecting with live steam pipe 28, the latter leading into passage 13 in the cylinder saddle. Outlet 27 and live steam pipe 5 28 are spaced transversely of the longitudinalcenter line of the locomotive in order to clear exhaust nozzle '1.

The lower surface of the upper header l4 and the upper surface of the lower header 21 are pro- ,9! vided with rows of sockets or seats 29 and 46 for cooperating with ball joint elements 30 and 45 on the ends of superheater units 31 and 44, respectively. Each unit comprises an upturned inlet section of tubing connecting with the upper .95 header 14, a horizontal portion extending back and forth within one of the boiler flues 10, and a downwardly disposed outlet section leading into the lower header 21.

It will be observed from Figures 1 and 2 that.,100 each row of ball joint seats 29 and 46 is associated with superheater units utilizing boiler flues in a column substantially in vertical alignment with that row. Consequently, all of the upturned ends of the units in each column are in,,105 substantially the same vertical plane and the downwardly disposed ends thereof are in a vertical plane spaced from the first vertical plane. The flow of steam from the saturated steam header 14 through the boiler flues and super- 1o ments of the headers, and clamps 32 each engaging corresponding ends of a pair of units in ada jacent columns. The bolt heads are.lodged-bc;-

' tween ridges 35 extending along slots'34 on the" opposite surfaces of the headers".

ed in the cylinder saddle, as in the a-bo've me'n=-- tioned copending applicatiompr in the live. steam pipe 28, or in the steam Home. Various other locomotive fittings may be mounted in the-smokeb i d .i

' '9 to-"1'2 ;"'the'= up er anaiower head- -ers3'6 indent-recast integral with the s'mokebox fgittidlnal walls =ofthe heiiders"merge with the the smoke' box and 'c'ooperate --in term-mg the end chiar'nbers in the header s-.;' give s-a flonge'r{ header and oreisteani-reciiv ing chambers rid-provides a race exposed tattleime g'asesln'i the Reinforcing-ribs 38' and 39 are'pro- The throttle valve (not shown) mayl'be mountvide' 'dfaWthe" intefsectfonsf ofthe headenstrucgases passing from the flues through the smokebox to the stack. Consequently, the live steam is maintained at a higher temperature and the operation of the locomotive is accordingly more efiicient and economical than where the present types of superheater headers are used.

.iQbviously the invention is not limited to the exact details of structure illustrated in the drawings and these may be modified in various ways without departing from the spirit of the invention and the exclusive use of all such modificationsas come within the scope of the appended claims is contemplated.

. What-isclaimed 1. Aione piece locomotive smokebox having a transversely eii'tending steam header formed integral therewith, the longitudinal walls of said header forming braces for said smokebox and the main wall of said smoke box forming the ends of steam receiving chambers of said header. 2.- Asa new" article of 'manufacture, a one i v g piece steam header comprising'a series -of steam and servef-to brace the'wall 40 thereof; "The 1011'- compartments, a steam'passageway connected to said compartments and having a centrally located f'outlet, and another steam passageway connected 1 "to said outlet, saidsecond mentioned passageway having an outlet spaced from said first'men'tioned outlet."-

-3L-An integral locomotive smoke box structure having a plurality of vertically spaced'steam headers extending across and bracing the same,

the longitudinal walls of said 'headersmerging with the side wall of-the smoke box to form therewith a steam receiving chamber.- 4. An integral cast met 1 steam header having a plurality-ofsteam compartments and an on center steam outlet connection, and means for equalizing the-flow of steam from said compartments through said connection and comprising a passage communicating with all of said compartments and having a central outlet and a sec- I end passage extending along said first-mentioned passage ironi said center outlet to said connec- 

